Finding the Third Proportional to 121,077.50 and 263,953.38

Step by Step Solution

1. Step 1: Write the proportion equation
   121,077.50 : 263,953.38 = 263,953.38 : x
2. Step 2: Convert to fraction form
   121,077.50/263,953.38 = 263,953.38/x
3. Step 3: Cross multiply
   121,077.50x = 263,953.38 × 263,953.38
4. Step 4: Simplify right side
   121,077.50x = 69,671,384,173.89
5. Step 5: Solve for x
   x = 69,671,384,173.89/121,077.50
6. Step 6: Final answer
   x = 575,428.00